{"id":34802,"date":"2023-03-30T18:29:58","date_gmt":"2023-03-30T22:29:58","guid":{"rendered":"https:\/\/discountrcparts.com\/?post_type=product&#038;p=34802"},"modified":"2026-03-27T21:10:17","modified_gmt":"2026-03-28T02:10:17","slug":"traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox","status":"publish","type":"product","link":"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/","title":{"rendered":"Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox) (85086-4-FOX)"},"content":{"rendered":"<div class=\"col-sm-12 col-md-4\">\n<p><strong>Large Pro-Scale<sup>\u00ae<\/sup>\u00a0Body with Highly Detailed Replica Parts<\/strong><\/p>\n<ul>\n<li>Heavy-duty truck body mounts to chassis in multiple locations<\/li>\n<li>Strong and functional tube frame mimics full-size off-road racers<\/li>\n<li>Detailed interior cabin with driver figures<\/li>\n<li>Replica brake calipers and discs with integrated 17 mm wheel hubs<\/li>\n<li>Two fully-functional spare tires and functional spare driveshaft<\/li>\n<li>Highly detailed replica parts: fire extinguishers, shock reservoirs, jack, and tools<\/li>\n<li>Realistic side plates mount to tube frame<\/li>\n<\/ul>\n<p><strong>VXL-6s\u2122 Waterproof Electronic Speed Control<\/strong><\/p>\n<ul>\n<li>6s LiPo compatible<\/li>\n<li>Integrated cooling fan<\/li>\n<li>Real-time telemetry via Traxxas Link<\/li>\n<li>Machined heat sink<\/li>\n<li>3-LED status indicators<\/li>\n<li>Powered accessory ports<\/li>\n<li>10-gauge silicone wire<\/li>\n<\/ul>\n<p><strong>Velineon<sup>\u00ae<\/sup>\u00a0Brushless Motor<\/strong><\/p>\n<ul>\n<li>4-pole 2200 kV brushless motor<\/li>\n<li>5mm output shaft<\/li>\n<li>Finned can for better heat dissipation<\/li>\n<\/ul>\n<p><strong>Traxxas Stability Management<sup>\u00ae<\/sup>\u00a0(TSM)<\/strong><\/p>\n<ul>\n<li>Improves straight line acceleration and braking on low-traction surfaces<\/li>\n<li>Maintains steering composure to allow throttle-on powerslides<\/li>\n<li>Never dulls throttle or slows the truck<\/li>\n<li>Adjusts from off to 100% assistance from the transmitter<\/li>\n<\/ul>\n<p><strong>Factory installed LED light kit<\/strong><\/p>\n<ul>\n<li>Dual bumper-mounted light bars (52 LEDs each)<\/li>\n<li>Curved roof light bar (52 LEDs)<\/li>\n<li>Multifunction red and amber brake light\/class light bar (24 red and 24 amber LEDs)<\/li>\n<li>High-voltage 8-channel power amplifier<\/li>\n<li>Regulated output for stable lighting performance<\/li>\n<\/ul>\n<\/div>\n<div class=\"col-sm-12 col-md-4\">\n<p><strong>TQi\u2122 2.4 GHz Radio System<\/strong><\/p>\n<ul>\n<li>2-channel transmitter<\/li>\n<li>5-channel micro receiver (6533) with fail-safe security and integrated telemetry ports<\/li>\n<li>Compatible with optional TQi Traxxas Link Wireless Module (6511) to access full Traxxas Link app functionality (sold separately)<\/li>\n<li>Automatically stores and loads settings for up to 30 Traxxas Link enabled models<\/li>\n<li>Adjustable steering and throttle sensitivity (exponential)<\/li>\n<li>Adjustable steering and throttle endpoints<\/li>\n<li>Patented waterproof receiver box with easy-access plug<\/li>\n<\/ul>\n<p><strong>Chassis<\/strong><\/p>\n<ul>\n<li>Composite inverted tub design\n<ul>\n<li>Makes maintenance easier<\/li>\n<li>Lowers center of gravity (CG) for improved handling<\/li>\n<li>Allows easy access to components<\/li>\n<\/ul>\n<\/li>\n<li>Tough skid plates protect critical components<\/li>\n<li>Fully integrated tube frame for scale appearance and added rigidity<\/li>\n<li>Reinforced bumpers to absorb impacts<\/li>\n<li>ESC battery plugs hard mounted to chassis<\/li>\n<\/ul>\n<p><strong>Innovative Battery Compartment<\/strong><\/p>\n<ul>\n<li>Accommodates single 4-cell LiPo or dual 2-cell or 3-cell LiPo batteries<\/li>\n<li>Opens from underneath without removing body<\/li>\n<li>Fixed oversize battery strap locks batteries securely into place<\/li>\n<li>Separate skid plate to protect batteries<\/li>\n<\/ul>\n<p><strong>Transmission<\/strong><\/p>\n<ul>\n<li>All-steel gear direct drive transmission<\/li>\n<li>Torque-Biasing Center Drive\u2122<\/li>\n<li>Removes as a single piece for easy maintenance<\/li>\n<li>Fixed-pin gear mesh system<\/li>\n<\/ul>\n<\/div>\n<div class=\"col-sm-12 col-md-4\">\n<p><strong>Drivetrain<\/strong><\/p>\n<ul>\n<li>Steel CV driveshafts (front) with 6 mm stub axles<\/li>\n<li>Steel straight axle (rear)<\/li>\n<li>Oil-filled limited slip front differential<\/li>\n<li>Locked steel spool (rear)<\/li>\n<li>Heavy-duty splined front driveshaft<\/li>\n<li>Fixed-length steel rear driveshaft<\/li>\n<\/ul>\n<p><strong>Steering<\/strong><\/p>\n<ul>\n<li>Chassis mounted 2075R metal-gear servo<\/li>\n<li>Dual bellcrank design with bearings and integrated servo saver<\/li>\n<li>Solid non-adjustable steering links for rugged durability<\/li>\n<\/ul>\n<p><strong>Suspension<\/strong><\/p>\n<ul>\n<li>Provides scale looks and authentic\u00a0off-road\u00a0driving dynamics<\/li>\n<li>Tough independent double-wishbone front suspension with captured rod ends<\/li>\n<li>Triangulated 4-link rear suspension with solid rear axle (patent pending)<\/li>\n<li>Tough composite trailing arms<\/li>\n<li>Steel upper links with 3 optional positions for suspension tuning<\/li>\n<li>Eight long-travel aluminum GTR shocks; four with springs and adjustable ride height collars<\/li>\n<li>Realistic and functional front and rear sway bars<\/li>\n<li>Detailed functional limit straps on rear axle<\/li>\n<\/ul>\n<p><strong>Wheels and Tires<\/strong><\/p>\n<ul>\n<li>Replica BFGoodrich<sup>\u00ae<\/sup>\u00a0KR3 off-road tires<\/li>\n<li>Beadlock-style 17 mm dual-diameter wheels<\/li>\n<\/ul>\n<p><strong>Sealed Ball Bearings<\/strong><\/p>\n<p><strong>Hex Hardware with Rust-Resistant Black Oxide Coating<\/strong><\/p>\n<p><strong>Requires Battery and Charger (Sold Separately)<\/strong><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Large Pro-Scale\u00ae\u00a0Body with Highly Detailed Replica Parts Heavy-duty truck body mounts to chassis in multiple locations Strong and functional tube frame mimics full-size off-road racers Detailed interior cabin with driver figures Replica brake calipers and discs with integrated 17 mm wheel hubs Two fully-functional spare tires and functional spare driveshaft Highly detailed replica parts: fire [&hellip;]<\/p>\n","protected":false},"featured_media":34807,"template":"","meta":[],"product_brand":[],"product_cat":[518,527],"product_tag":[],"class_list":{"0":"post-34802","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-cars-trucks-traxxas","7":"product_cat-udr","8":"product_shipping_class-free","10":"first","11":"outofstock","12":"taxable","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox) (85086-4-FOX) - Discount RC Parts<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox) (85086-4-FOX) - Discount RC Parts\" \/>\n<meta property=\"og:description\" content=\"Large Pro-Scale\u00ae\u00a0Body with Highly Detailed Replica Parts Heavy-duty truck body mounts to chassis in multiple locations Strong and functional tube frame mimics full-size off-road racers Detailed interior cabin with driver figures Replica brake calipers and discs with integrated 17 mm wheel hubs Two fully-functional spare tires and functional spare driveshaft Highly detailed replica parts: fire [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/\" \/>\n<meta property=\"og:site_name\" content=\"Discount RC Parts\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-28T02:10:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/discountrcparts.com\/wp-content\/uploads\/2023\/03\/85086-4-fox-front-3qtr-wlightkit.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/\",\"url\":\"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/\",\"name\":\"Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox) (85086-4-FOX) - Discount RC Parts\",\"isPartOf\":{\"@id\":\"https:\/\/discountrcparts.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/i0.wp.com\/discountrcparts.com\/wp-content\/uploads\/2023\/03\/85086-4-fox-front-3qtr-wlightkit.webp?fit=1000%2C1000&ssl=1\",\"datePublished\":\"2023-03-30T22:29:58+00:00\",\"dateModified\":\"2026-03-28T02:10:17+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/#primaryimage\",\"url\":\"https:\/\/i0.wp.com\/discountrcparts.com\/wp-content\/uploads\/2023\/03\/85086-4-fox-front-3qtr-wlightkit.webp?fit=1000%2C1000&ssl=1\",\"contentUrl\":\"https:\/\/i0.wp.com\/discountrcparts.com\/wp-content\/uploads\/2023\/03\/85086-4-fox-front-3qtr-wlightkit.webp?fit=1000%2C1000&ssl=1\",\"width\":1000,\"height\":1000},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/discountrcparts.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox) (85086-4-FOX)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/discountrcparts.com\/#website\",\"url\":\"https:\/\/discountrcparts.com\/\",\"name\":\"Discount RC Parts\",\"description\":\"RC cars, parts and supplies at bargain pricing.\",\"publisher\":{\"@id\":\"https:\/\/discountrcparts.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/discountrcparts.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/discountrcparts.com\/#organization\",\"name\":\"Discount RC Parts, LLC\",\"url\":\"https:\/\/discountrcparts.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/discountrcparts.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/i0.wp.com\/discountrcparts.com\/wp-content\/uploads\/2021\/01\/Discount-RC-Parts-logo-round-300x300-1.jpg?fit=300%2C300&ssl=1\",\"contentUrl\":\"https:\/\/i0.wp.com\/discountrcparts.com\/wp-content\/uploads\/2021\/01\/Discount-RC-Parts-logo-round-300x300-1.jpg?fit=300%2C300&ssl=1\",\"width\":300,\"height\":300,\"caption\":\"Discount RC Parts, LLC\"},\"image\":{\"@id\":\"https:\/\/discountrcparts.com\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox) (85086-4-FOX) - Discount RC Parts","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/","og_locale":"en_US","og_type":"article","og_title":"Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox) (85086-4-FOX) - Discount RC Parts","og_description":"Large Pro-Scale\u00ae\u00a0Body with Highly Detailed Replica Parts Heavy-duty truck body mounts to chassis in multiple locations Strong and functional tube frame mimics full-size off-road racers Detailed interior cabin with driver figures Replica brake calipers and discs with integrated 17 mm wheel hubs Two fully-functional spare tires and functional spare driveshaft Highly detailed replica parts: fire [&hellip;]","og_url":"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/","og_site_name":"Discount RC Parts","article_modified_time":"2026-03-28T02:10:17+00:00","og_image":[{"width":1000,"height":1000,"url":"https:\/\/discountrcparts.com\/wp-content\/uploads\/2023\/03\/85086-4-fox-front-3qtr-wlightkit.webp","type":"image\/webp"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/","url":"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/","name":"Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox) (85086-4-FOX) - Discount RC Parts","isPartOf":{"@id":"https:\/\/discountrcparts.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/#primaryimage"},"image":{"@id":"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/#primaryimage"},"thumbnailUrl":"https:\/\/i0.wp.com\/discountrcparts.com\/wp-content\/uploads\/2023\/03\/85086-4-fox-front-3qtr-wlightkit.webp?fit=1000%2C1000&ssl=1","datePublished":"2023-03-30T22:29:58+00:00","dateModified":"2026-03-28T02:10:17+00:00","breadcrumb":{"@id":"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/#primaryimage","url":"https:\/\/i0.wp.com\/discountrcparts.com\/wp-content\/uploads\/2023\/03\/85086-4-fox-front-3qtr-wlightkit.webp?fit=1000%2C1000&ssl=1","contentUrl":"https:\/\/i0.wp.com\/discountrcparts.com\/wp-content\/uploads\/2023\/03\/85086-4-fox-front-3qtr-wlightkit.webp?fit=1000%2C1000&ssl=1","width":1000,"height":1000},{"@type":"BreadcrumbList","@id":"https:\/\/discountrcparts.com\/index.php\/product\/traxxas-unlimited-desert-racer-udr-6s-rtr-4wd-race-truck-fox-85086-4-fox\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/discountrcparts.com\/"},{"@type":"ListItem","position":2,"name":"Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox) (85086-4-FOX)"}]},{"@type":"WebSite","@id":"https:\/\/discountrcparts.com\/#website","url":"https:\/\/discountrcparts.com\/","name":"Discount RC Parts","description":"RC cars, parts and supplies at bargain pricing.","publisher":{"@id":"https:\/\/discountrcparts.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/discountrcparts.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/discountrcparts.com\/#organization","name":"Discount RC Parts, LLC","url":"https:\/\/discountrcparts.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/discountrcparts.com\/#\/schema\/logo\/image\/","url":"https:\/\/i0.wp.com\/discountrcparts.com\/wp-content\/uploads\/2021\/01\/Discount-RC-Parts-logo-round-300x300-1.jpg?fit=300%2C300&ssl=1","contentUrl":"https:\/\/i0.wp.com\/discountrcparts.com\/wp-content\/uploads\/2021\/01\/Discount-RC-Parts-logo-round-300x300-1.jpg?fit=300%2C300&ssl=1","width":300,"height":300,"caption":"Discount RC Parts, LLC"},"image":{"@id":"https:\/\/discountrcparts.com\/#\/schema\/logo\/image\/"}}]}},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/discountrcparts.com\/index.php\/wp-json\/wp\/v2\/product\/34802","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discountrcparts.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/discountrcparts.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/discountrcparts.com\/index.php\/wp-json\/wp\/v2\/media\/34807"}],"wp:attachment":[{"href":"https:\/\/discountrcparts.com\/index.php\/wp-json\/wp\/v2\/media?parent=34802"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/discountrcparts.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=34802"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/discountrcparts.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=34802"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/discountrcparts.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=34802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}